Important
Please participate in the survey here!
(open until end of February)
To achieve a better sample size, I'd highly appreciate if you could circulate the link to this survey in your own networks.
Note
This is one of 189 standalone projects, maintained as part of the @thi.ng/umbrella monorepo and anti-framework.
🚀 Help me to work full-time on these projects by sponsoring me on GitHub. Thank you! ❤️
Shader AST code optimization passes/strategies. This is a support package for @thi.ng/shader-ast.
Currently, only the following operations are supported / considered:
- scalar math operators
- scalar math built-in functions
- single component vector swizzling
- literal hoisting
import { $x, $y, add, defn, float, mul, neg, ret } from "@thi.ng/shader-ast";
import { targetGLSL } from "@thi.ng/shader-ast-glsl";
import { constantFolding } from "@thi.ng/shader-ast-optimize";
const foo = defn("float", "foo", ["float"], (x) => [
ret(mul(x, add(neg(float(10)), float(42))))
]);
const bar = vec2(100, 200);
const prog = scope([
foo,
foo(add(float(1), float(2))),
foo(add($x(bar), $y(bar)))
], true);
const glsl = targetGLSL();
// unoptimized AST as GLSL (see section above)
glsl(prog);
// float foo(in float _sym0) {
// return (_sym0 * (-10.0 + 42.0));
// };
// foo((1.0 + 2.0));
// foo((vec2(100.0, 200.0).x + vec2(100.0, 200.0).y));
// same tree after constant folding optimizations
glsl(constantFolding(prog))
// float foo(in float _sym0) {
// return (_sym0 * 32.0);
// };
// foo(3.0);
// foo(300.0);
const expr = mul(float(4), $x(vec2(2)))
glsl(expr)
// (4.0 * vec2(2.0).x)
glsl(constantFolding(expr))
// 8.0STABLE - used in production
Search or submit any issues for this package
yarn add @thi.ng/shader-ast-optimizeES module import:
<script type="module" src="https://cdn.skypack.dev/@thi.ng/shader-ast-optimize"></script>For Node.js REPL:
const shaderAstOptimize = await import("@thi.ng/shader-ast-optimize");Package sizes (brotli'd, pre-treeshake): ESM: 1014 bytes
One project in this repo's /examples directory is using this package:
| Screenshot | Description | Live demo | Source |
|---|---|---|---|
 |
Evolutionary shader generation using genetic programming | Demo | Source |
TODO
If this project contributes to an academic publication, please cite it as:
@misc{thing-shader-ast-optimize,
title = "@thi.ng/shader-ast-optimize",
author = "Karsten Schmidt",
note = "https://thi.ng/shader-ast-optimize",
year = 2019
}© 2019 - 2024 Karsten Schmidt // Apache License 2.0